Over the Edge of the World by Laurence Bergreen

Ferdinand Magellan's daring circumnavigation of the globe in the sixteenth century was a three-year odyssey filled with sex, violence, and amazing adventure. Bergreen entwines a variety of candid, firsthand accounts, bringing to life this groundbreaking and majestic tale of discovery that changed both the way explorers would henceforth navigate the oceans and history itself.